Author Topic: H&R .450 Marlin Question (Read 1433 times)

Ridgeviewer · « **on:** February 17, 2007, 09:44:51 AM »

Hi Guys, Like to say I sure do enjoy reading this forum. What a wealth of information being shared!
Can any of you tell me of the accuracy your getting from your Ultra .450 Marlin?
Secondly, where can I order the Ultra in the 450 mar. or do I have to purchase the barrel for a receiver through the Barrel accessory program?
Thanks a ton,
Ridge

quickdtoo · « **Reply #1 on:** February 17, 2007, 10:20:30 AM »

Welcome to GBO!! The complete rifle has been offered in the past if you can find one, but is now only available new as an accessory barrel. An SB2 frame made 1999 or later would be required to have on fitted, see the FAQs and Help sticky for year of mfr info and a whole lot more.

Tim

http://hr1871.com/Support/accessoryProgram.aspx

Ridgeviewer · « **Reply #2 on:** February 17, 2007, 10:56:37 AM »

Holy Smokes! In less than 45 minutes I know understand what serial numbers I have to have to to purchase asterisk barrels!!!
Thanks a Ton Quickdtoo!!!!
Ridge

stimpylu32 · « **Reply #3 on:** February 17, 2007, 11:01:25 AM »

ridge

I have not had much luck with my 450 , and once i got my 45/70 , i have not even tried anymore . i ran about 300 rounds down it , from a bunch of diffrent hand loads and 6" at 100 being my best .

If you want a big bore go with the 45/70 , it will do everything the 450 will do with a lot less agrevation . this is what i have found , you may get a shooter , may not . your choice .

stimpy

sluggo · « **Reply #4 on:** February 17, 2007, 11:12:59 AM »

Stimp's right, my .450 will set an elephant on it's butt at 50 yds, after that groups start opening up. Hornady's new Leverlution rounds help with trajectory, but still hinky groupings. The upside, if ya hit something, the 325 gr cannonball and 2 tons of energy will surely do the trick. When I run out of gas for the chainsaw, I use mine to cut firewood.

sluggo · « **Reply #5 on:** February 17, 2007, 11:14:15 AM »

...it's not a tack driver, but it'll hammer railroad spikes with ease.....

stuffit · « **Reply #6 on:** February 17, 2007, 12:21:32 PM »

We have a Handi .450 Marlin that my wife hunts with in Primitive Weapons season here, and I shoot a BC. I load for both of them and use the same data. So far, all the loads that shoot well in my BC, also do well in the .450 Marlin. Her deer load is 40 gr Rx7 and aa 300 gr Rem SpHP corloct. So far, two seasons, two shots and two deer.

stuffit

Ridgeviewer · « **Reply #7 on:** February 17, 2007, 01:16:14 PM »

Thanks for the replys guys! By the sounds of things, I better look at a barrel for my Encore if I am to go with a 450 marlin barrel.
The twist of the 45/70 prevents me from using it in a project gun I'm planning.
Thanks again, Ridge

quickdtoo · « **Reply #8 on:** February 17, 2007, 01:34:16 PM »

Both the 45-70 and .450M barrels have 1:20" twist rates.

Tim

Ridgeviewer · « **Reply #9 on:** February 17, 2007, 01:42:05 PM »

I'll be a son of a gun! I had myself convinced the H&R 45/70 was 1 in 14....
What about the Pressure differences?

stimpylu32 · « **Reply #10 on:** February 17, 2007, 01:52:07 PM »

H&R uses the same frame for the 500 S&W so the 450 and 45/70 are well with in the safe pressure range of the frame . with Ruger level loads in the 45/70 you will be well above the 450 . but with a light rifle like the H&R will your sholder hold up to the pounding ?

stimpy

nomosendero · « **Reply #11 on:** February 17, 2007, 07:30:20 PM »

I have one & it will shoot the 350 Hor. & the Leverevelotion ammo alike into 1-1.3" groups (3 shot). I probably could find the magic
1 moa consistant reload, but why mess with it? At the range that the cart. is capable of this does fine.

Recoil is not an issue with mine, they installed a steel rod in the buttstock, a little overkill in my view, but it is certainly not punishing.

Ridgeviewer · « **Reply #12 on:** February 18, 2007, 05:30:15 AM »

Sounds like the accuracy in the H&R.450 marlin barrel is a hit or miss type thing... (pun Intended..

) Yet I read and read the H&R 45/70 barrel is awesome. What am I missing? Both are .458, 1 in 20 twist and most likely the same barrel untill chamberd and stamped.
Does the better accuracy lie with the multitude of 45/70 reloading data?
I intend to shoot 250gr - 275 gr Balistic tip bullets @ or around 2600 FPS from whatever barrel I end up using. Do any of you use loads in that neighborhood from either barrel?

slade · « **Reply #13 on:** February 18, 2007, 09:28:57 AM »

I have a H&R 450 Marlin, would it be a safe possibility to ream it out to 458 Win Mag?

bishopgrandpa · « **Reply #14 on:** February 18, 2007, 09:33:14 AM »

My 450 with Hornady ammo gives 2 inch groups but a 350 gr with H322 will do better. My 22" 45/70 lives it. My BC likes 4064. Go figure
(100 yds)

stimpylu32 · « **Reply #15 on:** February 18, 2007, 11:30:21 AM »

Slade

The frame will not take the pounding of the magum rounds , thats why H&R does not chamber it .

stimpy

ccoorreeyy · « **Reply #16 on:** February 18, 2007, 11:43:44 AM »

I've shot 11 shots from my 450. First two at 50 yds to sight in. Shots 3-5 did 1" at 75 yds, shots 6-8 did around 1" at 100 yds, and shots 9-11 stayed around 2.5" at 200 yds.

skifastchad · « **Reply #17 on:** February 18, 2007, 04:50:36 PM »

Quote from: slade on February 18, 2007, 09:28:57 AM

I have a H&R 450 Marlin, would it be a safe possibility to ream it out to 458 Win Mag?

The diameter of the belt is the same on the 450marlin and 458 win mag, but the marlin has a longer belt. It is .280 where the win mag has a .220" long belt. If you did ream out the length of the chamber, the 458 would have .06" of sloppy headspace.

nomosendero · « **Reply #18 on:** February 18, 2007, 05:08:43 PM »

Quote from: skifastchad on February 18, 2007, 04:50:36 PM

Quote from: slade on February 18, 2007, 09:28:57 AM
I have a H&R 450 Marlin, would it be a safe possibility to ream it out to 458 Win Mag?

The diameter of the belt is the same on the 450marlin and 458 win mag, but the marlin has a longer belt. It is .280 where the win mag has a .220" long belt. If you did ream out the length of the chamber, the 458 would have .06" of sloppy headspace.

Plus that itty bitty detail of being too big period, as are ALL .532 Mags & ALL Short Mags!!!! The NEF is too weak & never intended for those. If you want a break open to handle Belted Mags, you need an Encore or a CVA Optima Elite.

skifastchad · « **Reply #19 on:** February 19, 2007, 04:03:09 AM »

Quote from: nomosendero on February 18, 2007, 05:08:43 PM

Plus that itty bitty detail of being too big period, as are ALL .532 Mags

450marlin IS a .532 belted mag. It just has a longer belt so it can't be chambered in a smaller caliber magnum. Without the .280" long belt, a 450marlin could be loaded into a .375 H&H mag or a .416 remington mag gun with explosive results for the shooter.

nomosendero · « **Reply #20 on:** February 19, 2007, 02:33:43 PM »

Quote from: skifastchad on February 19, 2007, 04:03:09 AM

Quote from: nomosendero on February 18, 2007, 05:08:43 PM

Plus that itty bitty detail of being too big period, as are ALL .532 Mags

450marlin IS a .532 belted mag. It just has a longer belt so it can't be chambered in a smaller caliber magnum. Without the .280" long belt, a 450marlin could be loaded into a .375 H&H mag or a .416 remington mag gun with explosive results for the shooter.

Sorry for thinking about the 450 Marlin in a different way. It is not loaded to same pressure as the others. There, all better now! And, we allready talked about the belt being longer& we had allready excluded it from the others in previous comments. How about this, ALL those based on the 375 H&H case head. The NEF is TOO WEAK for those, Look at Encore or CVA.